/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package mfi.com.controller.account;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import mfi.com.model.*;

/**
 *
 * @author Doodles
 */
public class Login extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        
        /*
         * Initialization
         */
        Account account = null;
        ResultSet result = null;
        DBConnection connection = new DBConnection();
        HttpSession session = request.getSession();

        if (session.getAttribute("account") != null) {
            response.sendRedirect("Shop");
        }
        if (request.getParameter("login") == null) {
            request.setAttribute("title", "Log in");
            request.getRequestDispatcher("account/login.jsp").forward(request, response);
        } else {

            try {

                String user = request.getParameter("email");
                String pass = request.getParameter("password");

                result = connection.login(user, pass);
                if (result != null) {
                    int id = result.getInt("id");
                    String email = result.getString("email");
                    String password = result.getString("password");
                    String fName = result.getString("first_name");
                    String lName = result.getString("last_name");
                    String bDate = result.getString("birth_date").toString();
                    String gender = result.getString("gender");
                    String address = result.getString("address");
                    String contact = result.getString("contact");

                    account = new Account(id, email, password, fName, lName, bDate, gender, address, contact);
                    session.setAttribute("account", account);
                    session.setAttribute("message", "You are now logged in.");
                    response.sendRedirect("Shop");
                } else {
                    session.setAttribute("message", "Invalid username or password.");
                    response.sendRedirect("Login");
                }
            } catch (Exception e) {
                out.print("Unknown error!");
                response.sendRedirect("Login");
            } finally {
                out.close();
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
